import java.util.Scanner;

public class Demo2 {
    private volatile static int count = 0;
    public static void main(String[] args) {
        Thread t1 = new Thread(()->{
            while(count==0){

            }
            System.out.println("t1 执行结束!");
        });

        Thread t2 = new Thread(()->{
            Scanner scanner = new Scanner(System.in);
            System.out.println("请输入一个整数:");
            count = scanner.nextInt();
        });

        t1.start();
        t2.start();
    }
}
